3321644 has 6 divisors (see below), whose sum is σ = 5812884. Its totient is φ = 1660820.

The previous prime is 3321629. The next prime is 3321653. The reversal of 3321644 is 4461233.

It is a happy number.

It is a super-2 number, since 2×3321644² = 22066637725472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415202 + ... + 415209.

It is an arithmetic number, because the mean of its divisors is an integer number (968814).

Almost surely, 2^3321644 is an apocalyptic number.

It is an amenable number.

3321644 is a deficient number, since it is larger than the sum of its proper divisors (2491240).

3321644 is a wasteful number, since it uses less digits than its factorization.

3321644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830415 (or 830413 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 3321644 is about 1822.5377911034. The cubic root of 3321644 is about 149.2053382599.

Adding to 3321644 its reverse (4461233), we get a palindrome (7782877).

The spelling of 3321644 in words is "three million, three hundred twenty-one thousand, six hundred forty-four".